CPC A61L 27/26 (2013.01) [A61K 35/15 (2013.01); A61K 47/32 (2013.01); A61K 47/36 (2013.01); A61K 47/58 (2017.08); A61L 27/52 (2013.01); A61L 2300/204 (2013.01); A61L 2400/06 (2013.01)] | 13 Claims |
1. A compound of formula (I), or a pharmaceutically acceptable salt thereof:
wherein L represents a polymeric linking moiety; and
Ra represents H, (C1-C6)alkyl, or phenyl.
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